<script lang="ts" setup>
import { reactive,defineAsyncComponent,ref } from "vue";
const A = defineAsyncComponent(()=>import("./a.vue"))
</script>
<template>
    <div>
        <Suspense>
            <template #default>
                <A></A>
            </template>
            <template #fallback>
                <div>
                    loadding...
                </div>
            </template>
        </Suspense>
    </div>
</template>